Exactly my point. He was up 4-3 in tie-break, 2 serves. The first one he hit a very very poor backhand. The second one, he went for a slow serve and a shocking forehand. That's choking mate .
Absolutely, no denying that. It's not a new problem for him either in tiebreaks.
However, some context: the match he played would have been enought to beat pretty much anyone in tennis. He fired down 32 aces, bazillions of winners, played basically perfectly ...... and Roddick just would not go away. That sort of sheer guts and fury response is not something he's experienced enough to cope with - I don't think anyone else but Nadal would or even could have thrown that psychological brick wall up. Pretty brutal banging your head against it all match.
I'm hugely impressed with both here today ...... and that's coming from someone who thinks Roddick is a complete tool.